It’s a myth that man’s fertility does not change with Age, the quality of the sperm decreases with age and it takes longer to achieve pregnancy. If the age of the father is 40+ then the chances of miscarriage are higher, the age of the mother does not matter if the age of the father is 40+ it will have higher chances of miscarriage. Even the children are at great risk of autism, have difficulties in learning things, and have mental health problems too.